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Changeset When Comment
136161217 over 2 years ago

The largest building's footprint is inaccurate.

136161217 over 2 years ago

Buildings that should be square are not mapped as such. Please square buildings by pressing 'q' once you've closed the way.

136220206 over 2 years ago

2 of the footprints are not square please press 'q' to square buildings. Many of the building footprints are innacurate.

It is good that you wanted to avoid the highway and building footprints intersecting. Try to map roads so that the way goes roughly along the centre of the road.
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#REVIEWED_BAD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/136220206

136219410 over 2 years ago

The buildings you mapped as not square in fact are. There is an imagery anomaly toward the north of this changeset which distorts their true shape. In situations where a feature may be distorted, hard to see or obscured I recommend using multiple imagery sources. You can offset the alternative imagery to the reference. If you use this method you can even map using the alternate imagery so long as the same feature exists in the reference.

Some of the building footprints are inaccurate. Use areas of high contrast along the edge of roofs to determine a buildings shape and orientation. Map the building using its corners. If the image is distorted you may decide to map say, a 4 cornered building based on only 3 or maybe 2 of its corners. Use your judgment to decide which corners you will reference.
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#REVIEWED_BAD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/136219410

136219506 over 2 years ago

You did well to not map the vehicle on the road as a building.
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Published using OSMCha: https://osmcha.org/changesets/136219506

136219506 over 2 years ago

You missed buildings in this task area. Use shadows and roof colour to identify buildings in the imagery. Several building's shadows are included in their footprint. Shadows are useful in identifying buildings and their orientation but do not include them in the footprint as this will make it appear bigger on the map than it physically is.

Two pairs of buildings share common nodes. If buildings are attached they will likely share a portion of one or more of their faces and will not be attached at just one point. I believe you hold alt in ID Editor to avoid nodes automatically snapping to others nearby.

One building in the NE is 'L' shaped but mapped as a rectangle and has an anomaly on its SW corner.
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Published using OSMCha: https://osmcha.org/changesets/136219506

136220048 over 2 years ago

Buildings that should be square are not mapped as such. Orthogonolise building footprints by pressing 'q' for buildings with straight edges.

The highway intersects building footprints and shares a common node with at least one of them. Highways should not intersect building footprints (unless a tunnel or other such feature allows it) and should not share common nodes. Unglue common nodes shared by buildings and footprints by pressing 'g' and if the previously mapped highway intersects building footprints edit it so that it does not.
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Published using OSMCha: https://osmcha.org/changesets/136220048

136218890 over 2 years ago

Building footprints are inaccurate in some instances. Use shadows to ascertain a buildings orientation.

The modification in the NW is incorrect.
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Published using OSMCha: https://osmcha.org/changesets/136218890

136218452 over 2 years ago

Building footprints are not mapped as square. Orthogonolise building footprints by pressing 'q' for buildings with straight edges.

In the north what seem to be two individual buildings are maped using one footprint.
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#REVIEWED_BAD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/136218452

136219471 over 2 years ago

Buildings are not mapped as square. Orthogonolise building footprints by pressing 'q' for buildings with straight edges.
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#REVIEWED_BAD #OSMCHA
Published using OSMCha: https://osmcha.org/changesets/136219471

136121826 over 2 years ago

Task 470. It looks like you've changed the highway to an unclassified road.

133805826 over 2 years ago

Please write about what you did when submitting a changeset. State that you offset imagery and quantify the offset i.e. (x,y).

136121826 over 2 years ago

The highway here is NOT residential: it connects settlements. Residential roads are only typically found in urban environments/larger settlements. It should therefore be mapped as an unclassified road or a path depending on its ability to accomodate two tracked vehicles.

Some of the round buildings are mapped with their shadow included. Use shadows as references to help you map (building footprints should be adjacent to shadows); do NOT include them in building footprints as this will result in mapped buildings being larger than in reality and in a more dence environment could obstruct other features.

136127489 over 2 years ago

Please do not add map data that is not requested in the instructions of a project as it can make a task more difficult to validate and requires more time to map. I believe the tree rows you added are inaccurate as nearby trees have a much greater diamiter/width.

The round building you added is not a building as it does not cast a shadow. Other nearby buildings cast a clear significant shadow in this imagery.

Look (but do not map) beyond your task area for features you can definitely identify and use them as a reference when mapping.

128183642 over 2 years ago

The buildings you mapped are not squared. Please square them by pressing "q".

92493435 over 2 years ago

You joined a residential area and building node. Please do not do this in future.

92493435 over 2 years ago

Buildings are not square. In future please press "q" to square them.

133990532 over 2 years ago

Buildings not squared, inaccurate footprints and created data which overlaps another change set from the same mapathon.

In future please press q to square buildings, map accurate footprints and keep your mapping within a task boundary to avoid overlaps.

133990833 over 2 years ago

Buildings not squared, inaccurate footprints and created data which overlaps another change set from the same mapathon.

In future please press q to square buildings, map accurate footprints and keep your mapping within a task boundary to avoid overlaps.

124236776 over 3 years ago

I was referencing that tag, yes. I came back to this area and made edits to two bridges. I did not use the access=no tag as tends to be related to the legality of access.

I opted to instead remove the status tag (as they seem to be discouraged) and replaced it with a "surface=no" tag after seeing that on the "highway tag Africa" wiki page.

I also mapped the bridge's area and one similar to it to the NW (tagging as man_made=bridge) to help illustrate the difference in the state of the bridge to someone reading a map.